Mockoon CLI

An open-source API mock server that lets you create and run fake REST APIs for development and testing. Define endpoints with custom responses, headers, latency, and rules — all without writing backend code.

What You Can Do After Deployment

1. Visit your domain — verify the mock server is running
2. Define mock routes — configure endpoints via environment files or the Mockoon desktop app
3. Send requests — point your frontend or integration tests at the mock server
4. Simulate latency — add response delays to test loading states and timeouts
5. Use dynamic responses — leverage templating helpers to generate realistic fake data

Key Features

• Create unlimited mock API endpoints with custom responses
• Response rules for conditional responses based on request parameters
• Built-in templating with Faker.js helpers for dynamic data
• Configurable response latency and HTTP status codes
• CORS support out of the box
• Import and export via OpenAPI / Swagger specs
• Proxy mode to forward unmatched requests to a real API
• Logging of all incoming requests for debugging
• Stateless — no database required

License

MIT — GitHub | Website